... avoids the two difficulties of thermal strain and after-treatment, and saves the production period of mould.AdvantagesLaser ... is imported from the Britain.Laser welder is corrosion resistant and high temperature resistant, and has 8-10 years service ... steel, nickel tool steel, high grade steel, steel alloy, high tenacity aluminum alloy, etc.Machine High power mould laser welding machine 330W/400W